JP2019219471A - Erroneous insertion/removal prevention system - Google Patents

Abstract

To provide an erroneous insertion/removal prevention system capable of preventing an operator from mistaking a port to be operated without sacrificing the port density.SOLUTION: An optical transmission device 100 in an erroneous insertion/removal prevention system, includes: multiple ports 101 for transmitting/receiving signals to/from the outside; a touch sensor 102 provided in each port 101 for detecting a contact by a human body; a control unit 110 configured to display a piece of information of the port 101 corresponding to the touch sensor 102 which has detected a contact by a human body on a display unit 130; a storage unit 120 storing information for distinguishing each port 101; and a display unit 130 for displaying the information for distinguishing each port 101.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an erroneous insertion / removal prevention system.

With the recent miniaturization of electronic devices, the mounting density of external input / output terminals (hereinafter referred to as ports) for connecting communication cables and the like tends to increase. If a large number of ports are arranged in one device, a human error is liable to occur when an operator connects a cable to an incorrect port or unplugs an incorrect cable. In particular, in the case of an optical fiber communication facility for performing a large-capacity communication, erroneous removal of a cable causes a wide range of communication disconnection, which is a serious problem.
Usually, a number is assigned near a port so that an operator can recognize a correct port, but this is not always easy to understand.

FIG. 10 is a diagram showing ports arranged in a horizontal direction at the rear of a cabinet of a conventional electronic device. FIG. 10A shows port numbers near the start and end ports. FIG. 10B shows an example in which ports are arranged vertically and port numbers are described together with abbreviations.
As shown in FIG. 10A, eight ports 11-1 to 11-8 are provided in the rear part 10 </ b> A of the cabinet of the electronic device 1 </ b> A in a lateral direction. On the left side of the port 11-1, the number "1" of the port 11-1 is printed, and on the right side of the port 11-8, the number "8" of the port 11-8 is printed, stamped, pasted with a seal member, or the like ( Hereinafter, this is referred to as printing).
In the example of FIG. 10A, eight ports 11-1 to 11-8 are provided. In the eight ports 11-1 to 11-8, a gap between the ports is not formed so that characters can be printed from the viewpoint of improving the mounting density. Further, there is no space for printing above and below the port from the viewpoint of reducing the height of the apparatus. For this reason, the port numbers are printed only near the ports 11-1 and 11-8 at both ends. In this case, the intermediate ports 11-2 to 11-7 have no choice but to count from either end and are prone to error.

  As shown in FIG. 10B, eight ports 11-1 to 11-8 are arranged in upper and lower tiers at the rear portion 10 </ b> B of the cabinet of the electronic device 1 </ b> B. The upper and lower port numbers are collectively printed below, indicating that the upper part is an odd number and the lower part is an even number, depending on the direction of the mark. However, since the identification is performed using the mark, it is difficult to understand and the port number may be erroneously recognized.

Also, as a problem common to the example of FIG. 10A and the example of FIG. 10B, when the electronic device 1A and the electronic device 1B are installed at positions such as feet, for example, the rear portion 10A of the cabinet is used. , 10B are difficult to see by the operator, and are easily mistaken between layers.
Further, even if the operator can visually recognize the correct port, the line of sight is temporarily removed from the port when removing the cable to be inserted. For this reason, the correct port may be lost.

  In Patent Literature 1, a light emitting unit is assigned to each of a plurality of external input / output terminals for connecting to an external device, and corresponds to an external input / output terminal selected and operated among the plurality of external input / output terminals. An electronic device including a lighting switching unit for lighting a light emitting unit is described. The electronic device described in Patent Literature 1 allows a worker to recognize a correct port by turning on an LED installed near the port by remote control.

JP 2008-242718 A

  However, in the electronic device described in Patent Literature 1, it is not always easy to understand the positional relationship between the LED installed near the port and the corresponding port. In this respect, there is the same problem as the character printing of the related art as in the example of FIGS. In addition, there is a problem that a space for installing an LED in front of the device must be secured.

  The present invention has been made in view of such a background, and the present invention provides an erroneous insertion / removal prevention system that can prevent an operator from erroneously operating a port to be operated without sacrificing port mounting density. That is the task.

  In order to solve the above-mentioned problem, an invention according to claim 1 is provided with an electronic device having a plurality of input / output ports for transmitting and receiving external signals, and installed at each of the input / output ports to detect a contact of a human body. A touch sensor, a display unit that displays information for distinguishing each of the input / output ports, and a control unit that displays information on the input / output ports corresponding to the touch sensor that has detected contact with a human body on the display unit. The system is provided with an erroneous insertion / removal prevention system.

  In this way, even when a large number of ports are arranged in one electronic device, the worker may connect the cable to the wrong port, or unplug the wrong cable. It is possible to prevent the occurrence of a rolling human error. Further, it is possible to prevent a worker from erroneously setting a target port without sacrificing the port mounting density.

  According to a second aspect of the present invention, there is provided the erroneous insertion / removal prevention system according to the first aspect, wherein the touch sensor detects a contact of a human body via a conductive component that contacts the human body.

  By doing so, it is possible to detect the contact of the human body via the human body and a conductive component (for example, a cap that closes a connector or a port) that comes into contact with the human body.

  According to a third aspect of the present invention, in the electronic device, the input / output ports are arranged on a cabinet surface, and the display unit is arranged on the cabinet surface. The erroneous insertion / removal prevention system according to item 1 is provided.

  By doing so, the installation space for the display unit is only a part of the cabinet, so that the cabinet surface can be used effectively and the port mounting density can be further increased.

  The invention according to claim 4 further comprises a monitoring device that monitors the electronic device, and a notification unit that notifies the monitoring device of a signal from the touch sensor. An incorrect insertion / removal prevention system is used.

  By doing so, it is possible to double-check and perform the work while matching the recognition remotely with the site, thereby reducing erroneous work.

  According to the present invention, it is possible to provide an erroneous insertion / removal prevention system that can prevent an operator from erroneously setting a port to be operated without sacrificing a port mounting density.

1 is a functional block diagram schematically illustrating an erroneous insertion / removal prevention system according to a first embodiment of the present invention. It is a perspective view showing physical mounting of electronic equipment of an erroneous insertion prevention system concerning this embodiment. It is a schematic diagram of the touch detection circuit T when the touch of the erroneous insertion / removal prevention system according to the present embodiment is not performed, (a) is a circuit diagram of the touch detection circuit T, and (b) is a circuit of (a). 3A is a waveform diagram showing a pulse waveform output from a terminal A, and FIG. 3C is a waveform diagram showing a pulse waveform output from a terminal B of the circuit of FIG. It is a schematic diagram of the touch detection circuit T when a touch of the erroneous insertion / removal prevention system according to the present embodiment is performed, (a) is a circuit diagram of the touch detection circuit T, and (b) is a circuit diagram of the circuit of (a). FIG. 3C is a waveform diagram illustrating a pulse waveform output from a terminal A, and FIG. 3C is a waveform diagram illustrating a pulse waveform output from a terminal B of the circuit of FIG. It is a figure showing the 1st usage of prevention of erroneous insertion and removal of electronic equipment of the erroneous insertion and removal prevention system concerning this embodiment. It is a figure showing the 2nd usage of prevention of erroneous insertion and removal of electronic equipment of the erroneous insertion and removal prevention system concerning this embodiment. It is a figure showing the 3rd usage of prevention of erroneous insertion and removal of electronic equipment of the erroneous insertion and removal prevention system concerning this embodiment. It is a perspective view showing a modification of a port of an electronic device of an erroneous insertion prevention system concerning this embodiment, (a) is a perspective view showing modification 1, and (b) is a perspective view showing modification 2. is there. FIG. 6 is a functional block diagram schematically showing an erroneous insertion / removal prevention system according to a second embodiment of the present invention. It is a figure which shows the port provided in the rear part of the cabinet of the conventional electronic device in the horizontal direction, (a) is a figure which shows the example in which the port number was displayed near the starting port and the terminal port, (a) (b) is a diagram showing an example in which ports are arranged vertically and port numbers are described together with abbreviations.

Hereinafter, an erroneous insertion / removal prevention system in a mode for carrying out the present invention (hereinafter, referred to as “the present embodiment”) will be described with reference to the drawings.
(1st Embodiment)
FIG. 1 is a functional block diagram schematically showing an erroneous insertion / removal prevention system according to the first embodiment of the present invention. The erroneous insertion / removal prevention system according to the present embodiment is an example applied to insertion / removal of an optical fiber cable of an optical transmission device. The present invention can be applied to other electronic devices other than the optical transmission device.
As shown in FIG. 1, the optical transmission device 100 (mis-insertion / removal prevention system; electronic device) includes a plurality of ports 101-1, 101-2,..., 101-disposed on the front of a cabinet 100A (see FIG. 2). n (n is an arbitrary natural number) (input / output ports) and the touch sensors 102-1, 102-2, ..., 102-n installed in the respective ports 101-1, 101-2, ..., 101-n. , A control unit 110, a storage unit 120, and a display unit 130.
The ports 101-1, 101-2,..., 101-n are collectively referred to as ports 101 unless otherwise distinguished. If the touch sensors 102-1, 102-2,..., 102-n are not particularly distinguished, they are collectively referred to as touch sensors 102.

The port 101 is an input / output port for transmitting and receiving external signals.
A connector 21 (conductive component) provided at an end of an optical fiber cable 20 (hereinafter, referred to as a cable 20) is inserted into the port 101.
The connector 21 has a socket portion (outer portion) made of a conductive material such as a conductive plastic. However, the connector 21 may use a non-conductive material such as a resin mold or plastic for the socket portion.

The touch sensor 102 is installed in each port 101, and detects that a finger (human body) or the connector 21 is directly touched. In the present embodiment, the contact of the connector 21 (conductive material) is also detected. For this reason, the touch sensor 102 uses a capacitive touch sensor that detects a change in capacitance.
Note that the touch sensor 102 may use a resistive film type (pressure-sensitive type). Note that when a resistive touch sensor is used, the structure is simple, low cost, and the surface is coated with a film, which is resistant to dust and water droplets.

  The control unit 110 displays information on the port 101 corresponding to the touch sensor 102 that has detected contact with a human body on the display unit 130. Specifically, when touch sensor 102 detects a finger touch, control unit 110 acquires a corresponding port number from storage unit 120 and displays the port number on display unit 130. The control unit 110 is controlled to be updated each time an input to the touch sensor 102 is newly performed, and to be automatically turned off after a certain period of time when there is no input to the touch sensor 102. When detecting a plurality of pieces of adjacent sensor information, the control unit 110 controls the display unit 130 not to perform display.

The storage unit 120 stores information for distinguishing each port 101 (for example, a port number).
The display unit 130 displays information for distinguishing each port 101 (for example, a port number).

FIG. 2 is a perspective view showing a physical implementation of the optical transmission device 100.
As shown in FIG. 2, the optical transmission device 100 has a cabinet 100A, and a plurality of ports 101-1, 101-2,... , 101-10 are arranged in two rows in the horizontal direction. , 101-10 are provided with touch sensors 102-1, 102-2,..., 102-10.
A display unit 130 is provided at the upper left corner of the front surface of the cabinet 100A.

  The port 101 is disposed on the front surface of the cabinet 100A of the optical transmission device 100, and is a target for an operator to perform an insertion / extraction operation.

  The touch sensor 102 is arranged on the inner bottom surface of the corresponding port 101. The touch sensor 102 has a touch unit integrated with the bottom surface inside the port 101, and responds when a finger or the like touches the bottom surface inside the port 101 from the front.

The display unit 130 is a liquid crystal display, an LED numeric display, or the like. The display unit 130 is arranged at a position that is easy to see on the front, for example, at the upper left corner of the front of the cabinet 100A so that the operator can check the display contents.
In FIG. 2, since all the ports 101 are in the non-touch state, “00” indicating that all the ports 101 are in the non-contact state is displayed on the display unit 130.

Next, touch detection of the touch sensor 102 will be described with reference to FIGS.
3A and 3B are schematic diagrams of the touch detection circuit T when no touch is performed. FIG. 3A is a circuit diagram of the touch detection circuit T, and FIG. 3B is a circuit diagram of FIG. 3 (c) is a waveform diagram showing a pulse waveform output from a terminal B of the circuit of FIG. 3 (a).
The touch sensor 102 (see FIG. 2) operates by receiving power supply from a power supply (not shown), and detects a change in the capacitance of the terminal B of the touch detection circuit T shown in FIG. R is a circuit resistance of the touch detection circuit T.
The touch detection circuit T uses a circuit that reads a change in the time constant of the RC circuit. When the touch detection circuit T detects the electric pulse transmitted from the terminal A at the terminal B when the touch is not performed, the rise time (here, the 90% rise time) τ becomes an extremely small value.

4A and 4B are schematic diagrams of the touch detection circuit T when a touch is performed. FIG. 4A is a circuit diagram of the touch detection circuit T, and FIG. 4B is a circuit diagram of the circuit of FIG. FIG. 4C is a waveform diagram showing a pulse waveform output from the terminal A, and FIG. 4C is a waveform diagram showing a pulse waveform output from the terminal B of the circuit of FIG.
As shown in FIG. 4A, the human body is a dielectric and has a capacitance Cf. When the human body touches the touch sensor 102 (see FIG. 2), the touch detection circuit T detects a capacitance Cf between the touch sensor 102 and the ground.
As shown in FIG. 4A, in the touch detection circuit T when a touch is performed, an RC circuit is formed by the capacitance Cf of the human body, and as shown in FIG. The rising of the pulse is detected with a delay.
The capacitance Cf of the human body is said to be about 100 pF. Assuming that the circuit resistance R of the touch detection circuit T is 10 MΩ, the time constant RC of the touch detection circuit T is 100 pF × 10 MΩ = 1 msec. Since the 90% rise time is about 2.2 times the time constant RC, τ is 2.2 msec. Due to this delay, the touch sensor 102 can detect that a touch has been made.

The touch can be detected not only when the human body touches the touch sensor 102 directly, but also when the touch sensor 102 touches the touch sensor 102 via a grasped object (see FIGS. 6 and 7 described later). However, in this case, the object to be gripped is made of a conductive material and has the same potential as the sensor portion (touch electrode) of the touch sensor 102, or even if it is not so, a conductor is arranged near the grip portion to achieve high static electricity. Must be designed to have capacitance.
The reason is as follows.
The capacitance Ct detected in place of the capacitance Cf of the human body when there is a grasped object is a series connection capacitance of the capacitance Cf of the human body and the capacitance Cm of the grasped object. Can be calculated by

  (1 / Ct) = (1 / Cf) + (1 / Cm) (1)

  If the object to be grasped is a conductor such as a metal, Cf is considered to be infinite, so that Ct = Cm, and the detection can be performed as in the case of the touch detection circuit T shown in FIG.

On the other hand, when the object to be gripped is an insulator and the human body touches through the insulator, the capacitance Cm of the object to be gripped has an extremely small value. Assuming that the relative permittivity of a general plastic material is 3, the area in contact with the human body is 1 cm ² , and the distance from the position at the same potential as the sensor to the human body is 1 cm, Cm is the capacitance. Equation (2) According to equation (2), the capacitance Cm is calculated to be about 0.25 pF.

C = ε0 × εr × S / d (2)
ε0: dielectric constant of vacuum εr: relative dielectric constant of material S: electrode area d: distance between electrodes

  If Cf = 100 pF and Cm = 0.25 pF are substituted into the above equation (1), Ct ≒ 0.25 pF, which is almost the same as Cm. This is considered to be at the same level as the parasitic capacitance in the touch detection circuit T, and it is difficult to distinguish the delay τ from the case where no touch is made, and detection is difficult. In addition, the value can be easily reduced to a smaller value depending on the gripping method such as a shift in the holding position, which is not practical.

  From the above, it is preferable that the grasped object is made of a conductive material. In the present embodiment, the object to be gripped is the connector 21 (see FIG. 2), and the connector 21 is made of a conductive material. Therefore, the touch sensor 102 can detect a touch by the connector 21 in addition to the human body (finger).

Hereinafter, an operation of preventing an erroneous insertion / removal of an electronic device used in the erroneous insertion / removal prevention system configured as described above will be described.
The basic operation is as follows.
As shown in FIG. 1, control unit 110 detects a touch on touch sensor 102. When a touch is performed on the touch sensor 102, the control unit 110 acquires the port number corresponding to the touch sensor 102 from the storage unit 120. The control unit 110 displays the port number acquired from the storage unit 120 on the display unit 130.
The control unit 110 updates the display on the display unit 130 each time an input (touch) to the touch sensor 102 is newly performed. When there is no input to the touch sensor 102 for a certain period of time or more, the control unit 110 controls the display unit 130 to turn off the display after a certain period of time.
When detecting a simultaneous input to a plurality of touch sensors 102, control unit 110 does not display any of touch sensors 102. It is conceivable that the worker touches a plurality of adjacent touch sensors 102. In such a case, the control unit 110 controls so as not to perform the display in order to avoid confusion.

Next, a specific usage will be described.
FIG. 5 is a diagram illustrating a first usage method of preventing erroneous insertion / removal of an electronic device.
The worker tries to insert the connector 21 (see FIG. 1) into the port 101-4.
As shown in FIG. 5, the worker touches a port to be worked (here, port 101-4) with a finger. When the touch on the touch sensor 102-4 of the port 101-4 is performed, the control unit 110 acquires the number “04” of the port 101-4 corresponding to the touch sensor 102-4 from the storage unit 120. The control unit 110 displays the number “04” of the port 101-4 acquired from the storage unit 120 on the display unit 130.
Thereby, the worker can check the port number “04” of the work target port 101-4. It is possible to confirm the position of the port without risking misrecognition of the arrangement order of the ports or counting errors from the ends, thereby reducing erroneous connections.

FIG. 6 is a diagram illustrating a second method of using the electronic device to prevent erroneous insertion and removal.
The worker tries to insert the connector 21 into the port 101-4. The connector 21 is made of a conductive material, and corresponds to the gripping object described above.
As shown by a white arrow in FIG. 6, the operator holds the connector 21 and touches a port (here, the port 101-4) to be worked with the tip of the connector 21. When the tip of the connector 21 touches the touch sensor 102-4 of the port 101-4, the touch sensor 102-4 detects a change in capacitance caused by the connector 21 and a human body, and outputs a detection signal to the control unit 110. Here, the connector 21 is made of a conductive material and has the same potential as the touch sensor 102. The control unit 110 acquires the number “04” of the port 101-4 corresponding to the touch sensor 102-4 from the storage unit 120. The control unit 110 displays the number “04” of the port 101-4 acquired from the storage unit 120 on the display unit 130.

As a result, the number “04” of the port 101-4 to which the connector 21 is assigned is displayed on the display unit 130. When the worker applies the connector 21, the port number is displayed on the display unit 130. Therefore, after confirming that the port is correct, the operator pushes the connector 21 into the port 101-4 as it is, thereby completing the connection.
In addition, in the case of the first usage method, if the user views the cable 20 in his / her hand, there is a risk that the confirmed port may be lost. However, according to the second usage method, there is no concern.

FIG. 7 is a diagram illustrating a third method of using electronic devices to prevent erroneous insertion and removal. The third method of use is an operation for removing the connector 21.
The worker tries to remove the connector 21 from the port 101-4.
FIG. 7 shows a state where an operator has touched the connector 21 of the cable 20 already connected. Also in this case, the touch sensor 102-4 detects a change in capacitance caused by a human body touching via the connector 21, and outputs a detection signal to the control unit 110. The control unit 110 displays the number “04” of the port 101-4 acquired from the storage unit 120 on the display unit 130.
The operator can visually recognize the port number “04” corresponding to the display unit 130 by holding the connector 21. The operator can confirm that the connector 21 he is holding is the cable connected to the correct port. The operator removes the port if it is the correct port number. As a result, it is possible to prevent a mistake that the wrong cable is pulled out.

[Modification]
FIG. 8 is a perspective view showing a modification of the port of the optical transmission device 100.
As shown in FIG. 8A, ports 101A protruding from the front surface are arranged on the front surface of the cabinet 100A. The port 101A has a rectangular parallelepiped shape. The touch sensor 102 is disposed on the inner bottom surface of the rectangular port 101A, and the touch sensor 102A is disposed on the upper surface of the rectangular port 101A. That is, the port 101A has the touch sensor 102 arranged on the inner bottom surface and the touch sensor 102A arranged on the upper surface. The touch sensor 102A has a configuration similar to that of the touch sensor 102.
This modification is effective when the connector to be inserted into and removed from the port 101A is small, and it is difficult to insert a finger into the port 101A in a structure in which the width inside the port 101A is narrow.

  Further, as shown in FIG. 8B, the touch sensor 102A on the upper surface is removed from the port 101A in FIG. 8A. Instead, a cap 103 (conductive component) made of a conductive material that can be attached to the port 101A is provided. The cap 103 is made of a conductive material such as a conductive plastic like the connector 21 (see FIGS. 6 and 7). When the cap 103 is attached to the port 101A, the cap 103 contacts the touch sensor 102 in the port 101A.

By touching the surface of the cap 103, the operator can cause the touch sensor 102 in the port 101A to react via the cap 103.
By using the cap 103 made of a conductive material, the touch sensor 102A shown in FIG. 8A can be omitted. When the cap 103 is attached to an unused port, the cap 103 can also have a dustproof function.
Note that the cap 103 shown in FIG. 8B may be used for the touch sensor 102A shown in FIG.

FIG. 9 is a functional block diagram schematically showing an erroneous insertion / removal prevention system according to the second embodiment of the present invention. The same components as those in FIG. 1 are denoted by the same reference numerals, and description of overlapping portions will be omitted.
As shown in FIG. 9, the erroneous insertion / removal prevention system includes an optical transmission device 200 (erroneous insertion / removal prevention system; electronic device) and a maintenance server 250.
The optical transmission device 200 (mis-insertion / removal prevention system; electronic device) includes a plurality of ports 101-1, 101-2,..., 101-n arranged on the front surface of the cabinet 100A (see FIG. 2), and each port 101-n. , 101-n installed in the touch sensors 102-1, 102-2, ..., 102-n, the control unit 110, the storage unit 120, the display unit 130, and the notification unit. 140. The notification unit 140 is connected to the maintenance server 250 (monitoring device) by wire or wirelessly, and notifies the maintenance server 250 of the touch state and the port number recognized by the control unit 110.
The maintenance server 250 manages a touch state and a port number from another electronic device (not shown) including the optical transmission device 200. The maintenance server 250 transmits the touch state and the port number notified from the optical transmission device 200 to a remote work instructor in real time.

The remote work instructor instructs and confirms the work to the local worker by a predetermined communication means (for example, a screen display on the portable information terminal held by the worker or a voice on the mobile phone).
The work instructor can give an instruction to any of the first to third usage methods while confirming whether the operator is working on the correct port. For example, when the cable 20 (see FIG. 7) is removed, the following is performed. That is, at the stage where the worker holds the connector 21 (see FIG. 7), the work instructor is asked for confirmation. The work instructor confirms that the connector 21 being touched is the cable 20 connected to the correct work target port, and issues a removal instruction. The operator pulls out the cable 20 grasped as it is. By doing as described above, the work can be performed with double confirmation while matching the recognition remotely with the site, so that erroneous work can be reduced.

As described above, the optical transmission device 100 of the erroneous insertion / removal prevention system includes a plurality of ports 101 for transmitting and receiving external signals, a touch sensor 102 installed in each port 101 to detect contact with a human body, A control unit 110 that displays information on the port 101 corresponding to the touch sensor 102 that has detected the touch on the display unit 130, a storage unit 120 that stores information that distinguishes each port 101, and information that distinguishes each port 101. And a display unit 130 for displaying.
With this configuration, when performing the insertion / extraction operation for each port 101, the operator can perform the operation while checking the operation target port on the display unit 130. Therefore, the mounting density of the port 101 is increased, and even when a large number of ports are arranged in one electronic device, an operator may connect a cable to an incorrect port or conversely connect an incorrect cable. It is possible to prevent a human error from being removed or the like.
In addition, the display unit 130 is located at one location on the front surface of the cabinet 100A while realizing a configuration in which a large number of ports are arranged. Therefore, it is possible to prevent a worker from erroneously setting a target port without sacrificing the port mounting density.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be appropriately changed without departing from the spirit of the present invention.
In the present embodiment, the touch portion of the touch sensor 102 is provided on the bottom surface inside the port 101 which is easy to touch with a finger. However, the present invention is not limited to this. A part may be provided.
In the present embodiment, the information for distinguishing each input / output port displayed on the display unit 130 is described as a port number. However, any information can be used as long as it can be confirmed that the port is a work target port. Information.
In the present embodiment, the display unit 130 is mounted in the same cabinet 100A as the optical transmission device 100, but an independent display device may be provided.
In the present embodiment, an example in which the cable 20 is connected has been described. However, the present invention can be applied to a storage device such as a USB memory or a pluggable module such as an SFP (Small Form Factor Pluggable) instead of the cable 20.

20 Fiber cable (cable)
21 Connectors (conductive parts)
100, 200 Optical transmission device (mis-insertion / removal prevention system; electronic equipment)
100A cabinet 101, 101-1, 101-2, ..., 101-n port (input / output port)
102, 102-1, 102-2,..., 102-n touch sensor 103 cap (conductive part)
110 control unit 120 storage unit 130 display unit 140 notification unit 250 maintenance server (monitoring device)
T touch detection circuit

Claims (4)

An electronic device having a plurality of input / output ports for transmitting and receiving external signals,
A touch sensor installed at each of the input / output ports and detecting contact with a human body;
A display unit for displaying information for distinguishing each of the input / output ports,
A control unit that displays information on the input / output port corresponding to the touch sensor that has detected contact with a human body on the display unit. The erroneous insertion / removal prevention system according to claim 1, wherein the touch sensor detects a contact of a human body via a conductive component that is in contact with the human body. The electronic device arranges each of the input / output ports on a surface of a cabinet,
The erroneous insertion / removal prevention system according to claim 1, wherein the display unit is disposed on the surface of the cabinet. A monitoring device that monitors the electronic device,
The erroneous insertion / removal prevention system according to claim 1, further comprising: a notification unit that notifies the monitoring device of a signal from the touch sensor.

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